--- title: "Coding Classes in Herefordshire | Live Online, Ages 6 to 67" description: "Live online coding, Python, algorithms and maths classes across Herefordshire, from Hereford to Leominster, Ross-on-Wye, Ledbury, Bromyard and the villages." canonical: https://learn.modernagecoders.com/coding-classes-in-herefordshire source: src/pages/coding-classes-in-herefordshire.html --- > Live online coding, Python, algorithms and maths classes across Herefordshire, from Hereford to Leominster, Ross-on-Wye, Ledbury, Bromyard and the villages. Skip to contentCourses for Herefordshire ## The four courses Herefordshire learners start with An eight-year-old in Kington who loves puzzles, an eleven-year-old in Ledbury writing a first Python program, a Year 11 in Hereford getting serious about algorithms, and a farm business owner near Bromyard who wants to organise records properly. One free lesson each to begin. [![Problem Solving and Computational Thinking for Kids course thumbnail](/images/problem-solving-kids.webp)Ages 7 to 12Problem Solving and Computational Thinking for KidsComputational thinking and logic puzzles for children, including sorting and ordering things efficiently.See the syllabus](/courses/problem-solving-and-computational-thinking-for-kids)[![Python and AI for Kids course thumbnail](/images/python-kids.webp)Ages 10 to 13Python and AI for KidsFirst typed Python: lists, loops and the moment a child sees that inserting into a list takes work.See the syllabus](/courses/python-ai-kids-masterclass)[![Problem Solving for Teens course thumbnail](/images/problem-solving-teens.webp)Ages 13 to 18Problem Solving for TeensData structures, algorithms and dynamic programming for teenagers, built so the ideas stick.See the syllabus](/courses/problem-solving-dsa-masterclass-teens)[![Data Structures & Algorithms Course course thumbnail](/images/dsa-college.webp)AdultsData Structures & Algorithms CourseArrays to graphs to dynamic programming for adults, including when to choose each structure.See the syllabus](/courses/data-structures-algorithms-masterclass-college) Browse the [course atlas](/course-atlas) for more than one hundred options and use the [coding roadmap](/coding-roadmap) to check prerequisites. The four we are known for ### Python, AI, vibe coding and agentic coding These run underneath everything above. Every one is live and online, placed by ability rather than by age, and the first class is free. [![Vibe Coding for Teens course thumbnail](/images/vibe-coding-teens.webp)Vibe codingAges 13 to 17Vibe Coding for TeensPython, web and AI projects where the learner still owns the thinking.See the syllabus](/courses/vibe-coding-for-teens-python-web-ai-projects-course)[![Python Automation Course course thumbnail](/images/python-college.webp)Python and AICollege and adultPython Automation CourseAutomate the work you already do, then let AI carry part of it.See the syllabus](/courses/python-ai-automation-masterclass-college)[![AI and Machine Learning for Teens course thumbnail](/images/ai-ml-teens.webp)AI and MLAges 14 to 18AI and Machine Learning for TeensTrain a model, read what it learned, and be able to say why it is wrong.See the syllabus](/courses/ai-ml-masterclass-teens)[![Codex & Claude Code course thumbnail](/images/codex-claude-code-adults.webp)Agentic codingProfessionalsCodex & Claude CodeRun AI coding agents on real work without losing control of the codebase.See the syllabus](/courses/codex-and-claude-code-ai-coding-agents-masterclass-for-adults-professionals)Herefordshire in figures ## One council, one city and a county of villages The county's population is from the 2021 Census on Nomis. Towns are the ONS built-up areas, each checked against our own count of census output areas. | Town | Residents | Where | | --- | --- | --- | | Hereford | 60,480 | The city, on the Wye | | Leominster | 11,205 | North of Hereford, on the Lugg | | Ross-on-Wye | 10,990 | South-east, on the Wye | | Ledbury | 8,345 | East, below the Malverns | | Bromyard | 3,815 | North-east | Hereford's built-up area holds about a third of the county's people, and no other town reaches 12,000. The ONS also lists Great Malvern against Herefordshire, but only around 260 of its 33,185 residents live on this side of the border, so it belongs to Worcestershire. Everywhere else is villages, hamlets and farms. For a teenager who wants to take programming further, the nearest group at their level can easily be an hour's drive away, and that is the gap an online class fills. ### The Hereford page is separate Our [Hereford city page](/best-coding-class-in-hereford) covers the city and runs a different project on the county's long temperature record. This page is for families across the whole of Herefordshire. Herefordshire Council and academies set school calendars, which we did not read, so lesson breaks are agreed with each family. The Herefordshire project ## Fifty new books and a shelf of chains A shelf of 229 books in order, fifty new arrivals at random places, and three ways to store the list, each costed in Python. The learner starts with a shelf of 229 books, the number of medieval manuscripts the cathedral says now occupy two bays of the Chained Library, kept strictly in order. Fifty new books arrive, each belonging at a random place in the order, and the learner writes three versions of the shelf. The first is a packed rod: books sit on consecutive hooks, so putting one in means sliding every later chain along by one. In programming, that is an array, and the slide is the cost of inserting into the middle of one. | How the shelf is stored | Work done | Average per new book | | --- | --- | --- | | Packed rod (an array) | 6,822 chain slides | 136.4 slides | | Each book points to the next (a linked list) | 100 link changes, but 5,853 books walked past to find each place | 117.1 books walked past | | Rod with 1 spare hook in every 10 | 2,283 slides, 8 full re-spacings | 45.7 slides | | Rod with 2 spare hooks in every 10 | 1,039 slides, 3 full re-spacings | 20.8 slides | | Rod with 5 spare hooks in every 10 | 264 slides, no re-spacing | 5.3 slides | The second version is the computer scientist's answer, a linked list, where each book simply holds a pointer to the next. Inserting is then cheap, just two links to change. But there is a catch that surprises most learners: to find where a new book goes, you have to walk along the chain from the start, one book at a time, and that walking costs almost as much as the sliding did. The work has not disappeared; it has moved from moving things to finding things. The third version is what librarians do anyway: leave spaces. With a couple of spare hooks in every run of ten, most new books need only a few neighbours moved, and the whole shelf needs re-spacing only occasionally. Two spares per ten cut the work to 1,039 slides; five spares cut it to 264. Databases, file systems and text editors all use versions of this trick. The price is shelf space, and choosing how much to leave is a real design decision. ### Ages 10 to 13 Line up ten numbered cards, insert a new card in the middle, and count how many cards you had to move; then do it in a Python list. ### Ages 13 to 16 Build a linked list class, insert fifty items, and count both the link changes and the steps taken to find each position. ### Ages 16 and up Implement the gapped shelf, vary the number of spare hooks, and plot the trade-off between wasted space and work saved. ### What is historical and what is modelled The Chained Library's description and its 229 manuscripts come from Hereford Cathedral. Our shelf, the random new arrivals and the spare-hook schemes are a teaching model; we are not describing how the cathedral actually shelves or adds books. Why Hereford Cathedral ## Chains, rods and locks from 1611, and a map from about 1300 The Herefordshire link, in Hereford Cathedral's own words. | Treasure | What the cathedral says | | --- | --- | | The Chained Library | The largest to survive with all its chains, rods and locks intact; now shown in its original arrangement as it was from 1611 to 1841. | | How it works | A chain is attached to the front cover of each book; the other end slots on to a rod along the bottom of each shelf. | | Its manuscripts | The 8th-century Hereford Gospels is one of 229 medieval manuscripts which now occupy two bays of the library. | | The Mappa Mundi | Made about 1300 on a single sheet of vellum measuring 64 × 52 inches, with Jerusalem at the centre of the world. | | Its drawings | Around 500 drawings of the history of humankind and the marvels of the natural world. | The chains were a security system, but they also fixed how the library could grow: a chained book cannot simply be slipped in anywhere. Every storage system makes the same kind of choice, trading ease of adding things against ease of finding them and the space it wastes. A Herefordshire learner who has costed three versions of one shelf has learned the first real lesson of data structures. Modern Age Coders has no connection with Hereford Cathedral or Herefordshire Council, and nothing on this page implies one. The cathedral's descriptions are its own; the shelf model and any error in it are ours. Nearby pages The [Hereford](/best-coding-class-in-hereford) city page is next door in spirit; [Gloucestershire](/coding-classes-in-gloucestershire) and [the West Midlands](/coding-classes-in-the-west-midlands) are other county pages nearby. Levels ## From ordering cards to choosing a data structure The free lesson finds where each learner starts. Age suggests; ability decides. Ages 6 to 10 ### Putting things in order Puzzles and Scratch projects about sorting, ordering and finding things, the start of every data structure. [Problem Solving and Computational Thinking for Kids](/courses/problem-solving-and-computational-thinking-for-kids)[Scratch Coding for Kids](/courses/scratch-programming-complete-course)Ages 10 to 13 ### Lists that grow Python lists, insertions and loops, with a counter that shows how much work each change really takes. [Python and AI for Kids](/courses/python-ai-kids-masterclass)[Coding for Kids](/courses/kids-coding-blocks-masterclass)Ages 13 to 18 ### Structures and their costs Arrays, linked lists, trees and hash tables, each chosen for a reason and tested against the others. [Problem Solving for Teens](/courses/problem-solving-dsa-masterclass-teens)[Competitive Programming for Teens](/courses/competitive-programming-for-teens-course)Ages 18 to 67 ### Design choices at work Adults learn data structures and algorithms properly, and how databases and file systems make the same trade-offs. [Data Structures & Algorithms Course](/courses/data-structures-algorithms-masterclass-college)[MySQL Course](/courses/mysql-database-complete-masterclass-college)AI and data structures ## An AI can write a linked list. Will it tell you when a list of chains is the wrong choice? It answers the question asked; the design question is usually yours. Ask a chatbot for a linked list and you will get a tidy one. Ask for the fastest way to keep books in order as new ones arrive and it may well recommend the linked list too, because insertion is famously cheap. What it may not add is that finding the right place still means walking the chain, or that a simple gap strategy beats both for this job. The choice of structure depends on the whole pattern of use, and that is exactly the information a short prompt leaves out. A Herefordshire student who has watched 5,853 steps of walking replace 6,822 slides knows to ask how data will be added, searched and removed before choosing how to store it. That question is at the centre of good software design, and it is one that no amount of generated code can answer without someone who understands the trade-offs. So a Herefordshire teenager should learn to code in 2026 to make the design choice, not just to type the structure. The longer argument is in [why teenagers should still learn to code in 2026](/blog/is-coding-worth-learning-2026). Getting started ## Kington to Ross-on-Wye with no lane to drive Herefordshire's lanes are long and its buses are few after school. Online lessons need neither. ### From the farmhouse or the flat A kitchen near Leominster, a bedroom in Hereford, a study in Ledbury. The teacher shares the screen; the learner types. ### School terms we share Year groups, GCSE choices and A levels are named as Herefordshire schools name them, and teaching is in English. ### A free first lesson A real lesson with real work, then a straight recommendation. We ask for no payment details. ### Learners at your level Five to ten classmates at the same stage, from many places, which rural counties rarely have locally. ### Around your school holidays Usually two lessons a week, pausing when your school does. ### UK clock times India, where our teachers are, is ahead of the UK by four and a half hours in summer and five and a half in winter; your times are always UK times. Why groups are formed by level A county of one small city and scattered villages has very few learners at any one stage in any one place. Level-based groups let a Bromyard learner join others at exactly the same point. Fees ## Fees in Herefordshire The same prices across the county, and in every country outside India. First class**USD 0** A full lesson of genuine work, with a recommended level and course at the end. Group tuition**USD 100** About eight lessons a month in a group of five to ten learners at one level. Private tuition**USD 150** About eight lessons a month, one teacher with one learner. Fees are in US dollars for everyone outside India, and there is no list in pounds. We charge nothing until the free lesson has settled a course and a weekly time; pausing, missed lessons and switching between group and private are explained on the pricing page. Request placement[Check availability](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20may%20I%20book%20a%20free%20lesson%20for%20a%20learner%20in%20Herefordshire%3F)Reviews ## Google reviews from families Rated 4.9 across 547 Google reviews. These are real reviews, reproduced as written. ★★★★★ "The one step solution for my son. Modern Age Coders make learning coding so simple that kids love it. The teachers explain complex concepts clearly with practical exercises and interactive content." Ria Mukherjee Parent ★★★★★ "Modern Age Coders has been a game-changer for me. I struggled to grasp IT concepts and coding before joining, but their classes transformed everything. I can now confidently write complex programs with ease." Samriddha Mondal Student ★★★★★ "One of the most wonderful education centres out there. Education is not limited to school syllabus but focuses on skill development." Vansh Agarwal Student ★★★★★ "My child Dhairya is really enjoying the Modern Age Coders classes. This is his first online class and he eagerly looks forward to it. I can already see his improvement, and the teachers are very cooperative." Sonam Oswal Parent of Dhairya ★★★★★ "Modern Age Coders have wonderful teachers who teach in a clear, easy and practical way. The teacher boosts students' confidence and inspires them to learn without hesitation." Sonu Goyal Parent ★★★★★ "I highly recommend this computer coding class! The teachers are incredibly knowledgeable and passionate about coding." Ritu Kedia Parent Free placement class ## Book a free lesson Tell us an age or school year and one interest. The first lesson might be a sorting puzzle, a first Python list, or the chained shelf on this page. ### Contact the team directly WhatsApp or call [+91 91233 66161](tel:+919123366161), or email [contact@modernagecoders.com](mailto:contact@modernagecoders.com). This is Modern Age Coders' actual contact, an Indian number, and not an invented Herefordshire one. [WhatsApp Modern Age Coders](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20may%20I%20book%20a%20free%20lesson%20for%20a%20learner%20in%20Herefordshire%3F) Submitted details are used for placement and follow-up. FAQ ## Herefordshire questions The county, the Chained Library project and our lessons. ### What are the largest towns in Herefordshire? By ONS built-up area in 2021: Hereford 60,480, Leominster 11,205, Ross-on-Wye 10,990, Ledbury 8,345 and Bromyard 3,815. ### Is this page different from the Hereford page? Yes. The Hereford page is about the city and runs a project on the county's temperature record; this page covers all of Herefordshire with a data structures project. ### What is the Chained Library project? Learners insert fifty new books into an ordered shelf of 229 in three ways: a packed rod, a linked list and a rod with spare hooks. The packed rod needs 6,822 chain slides; five spare hooks per ten cut that to 264. ### What is a linked list? A way of storing items where each one points to the next. Inserting is cheap once you know where, but finding the place means walking along from the start. ### What is special about Hereford Cathedral's Chained Library? The cathedral says it is the largest chained library to survive with all its chains, rods and locks intact, shown in its arrangement of 1611 to 1841. ### Is there a classroom in Hereford? No. All lessons are live online, so learners from Kington to Ross-on-Wye can share a class without travelling. ### What ages do you teach? Six to sixty-seven. Puzzles and Scratch for young children, typed Python from about ten, algorithms for teenagers, and data structures or databases for adults. The free lesson sets the level. ### Do you teach data structures to teenagers? Yes. The teen problem-solving course covers logic and programming foundations, core data structures and algorithms, and dynamic programming. ### How much are lessons? The first lesson is free. Group places are USD 100 a month and private lessons USD 150 a month after that, with no sign-up fee and no minimum term. ### When are Herefordshire school holidays? Herefordshire Council and academies set their own dates. We arrange lesson breaks around your school's calendar. Across the UK ## Pages near Herefordshire See the [Hereford](/best-coding-class-in-hereford) city page, or neighbouring counties [Gloucestershire](/coding-classes-in-gloucestershire) and [the West Midlands](/coding-classes-in-the-west-midlands). The [UK hub](/coding-classes-in-united-kingdom) lists every other page. Book the free class[WhatsApp our team](https://wa.me/919123366161?text=Hello%20Modern%20Age%20Coders%2C%20may%20I%20book%20a%20free%20lesson%20for%20a%20learner%20in%20Herefordshire%3F)Free Herefordshire class[Call +91 91233 66161](tel:+919123366161) ## Keep exploring Modern Age Coders ### Coding classes in nearby places - [Coding Classes in Hertfordshire](/coding-classes-in-hertfordshire) - [Coding Classes in Hengelo](/coding-classes-in-hengelo) - [Coding Classes in the Highlands](/coding-classes-in-highland) - [Coding Classes in Helmond](/coding-classes-in-helmond) - [Coding & Maths Classes near Hiland Park](/coding-classes-in-hiland-park) - [Coding Classes in Heerlen](/coding-classes-in-heerlen) - [Coding Classes in Merseyside](/coding-classes-in-merseyside) - [Coding Classes in Leeuwarden](/coding-classes-in-leeuwarden) - [Coding Classes in Kralingen-Crooswijk](/coding-classes-in-kralingen-crooswijk) - [Coding Classes in Blackrock, Dublin](/coding-classes-in-blackrock-dublin) ### Free resources - [C++ Tutorial: From Basics to Advanced](/resources/cpp) - [MLOps and Model Deployment](/resources/ai-and-machine-learning/ml-ops-and-model-deployment) - [STL Algorithms and Iterators](/resources/cpp/stl-algorithms-and-iterators) - [Unsupervised Learning](/resources/ai-and-machine-learning/unsupervised-learning-clustering) ### From the blog - [File Types in Python: A Complete Beginner's Guide to Working](/blog/file-types-in-python-complete-guide) - [35 Basic Python Programs for Beginne With Code and Output](/blog/python-basic-programs-for-beginners) - [Python Dictionary: The Complete Guide With 20 Examples](/blog/python-dictionary-complete-guide) ### Start here - [Browse every live course at Modern Age Coders](/courses) - [Try a free trial class with a Modern Age Coders mentor](/free-trial) --- *Canonical: https://learn.modernagecoders.com/coding-classes-in-herefordshire*